Sure it's absurd to imagine that people make 0/1 choices, however it's also absurd to reject a 3-line shortened proposition because it seems absolute.

> Those conductive to such and argument have already become vegetarian

Choices are more complicated than "being conductive", for exemple

- opinion change: you're not totally against the idea but not convinced neither. If you're open minded, learning something new or being witness of a context change can make you reevaluate.

- Motivation: there's thinks in your life that occupy your brain and you don't feel free to start another change now, but you might being more disponible to self-actualisation later.

- Event-Trigger: An inspiring talk, movie, or discussion with a friend sometimes trigger you to reconsider your position. I know cold showers aren't that hard and they're great for the body and the mind. I never had to courage to start that new habits but a convincing and motivating HN post might be the trigger to a routine.